Climate Sensitivity
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- In IPCC Reports, equilibrium climate sensitivity refers to the equilibrium change in global mean surface temperature following a doubling of the atmospheric (equivalent) CO2 concentration. More generally, equilibrium climate sensitivity refers to the equilibrium change in surface air temperature following a unit change in radiative forcing (degrees Celsius, per watts per square meter, °C/Wm-2). In practice, the evaluation of the equilibrium climate sensitivity requires very long simulations with Coupled General Circulation Models (Climate model). The effective climate sensitivity is a related measure that circumvents this requirement. It is evaluated from model output for evolving non-equilibrium conditions. It is a measure of the strengths of the feedbacks at a particular time and may vary with forcing history and climate state. See climate, radiative forcing.
EPA - Cite This Source - This Definition - The equilibrium response of the climate to a change in radiative forcing, for example, a doubling of the carbon dioxide concentration. See climate, radiative forcing.
EPA - Cite This Source - This Definition - abrupt climate change, adaptation, Carbon Dioxide Fertilization, Climate Change, Climate Lag, Emissions, forcing, Forcing Mechanism, Global Warming, Irreversibilities, mechanism, Nonlinearities, Radiative Forcing